29. --- Do you know that man? --- Not really, just a nodding _______.
As teenagers of the 21st century, we should be ready to _____ the challenge of society.
The reason _____ they held a party was _____ it was Sue’s birthday.
--Why do you look pale today?--I was very ________my mother’s illness. I stayed awake last night.
I _____ in the street when someone _____ me.
On AIDS Day, the minister of Health Department demanded that the problems ______ paid special attention to.